Disclosed herein is a rubber coating for an electronic communication module, the coating comprising 100 phr of at least one diene-based elastomer, and at least one nano-sized inorganic material having a dielectric constant of at least 9 and a loss tangent of less than 0.1, wherein the coating when cured has a dielectric constant of at least 4.5 and a loss tangent of less than 0.01. Also disclosed are an electronic communication module comprising a radio device having at least a portion of its outer surface surrounded by the rubber coating (i.e., a rubber composition of specified composition), tires or tire retreads incorporating the electronic communication module, and methods for increasing the dielectric constant of a rubber coating without increasing its loss tangent.
Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. An electronic communication module for a tire comprising a radio device having at least a portion of its outer surface surrounded by a rubber coating, the coating comprising: (a) 100 parts of at least one diene-based elastomer; (b) about 20 to about 100 parts per hundred parts of the at least one diene elastomer of at least one nano-sized inorganic material having a dielectric constant of at least 9 and a loss tangent of less than 0.1; and no more than 5 parts per hundred parts of the at least one diener elastomer of reinforcing carbon black having a particle size of 10 nm to 1000 nm. wherein the coating when cured has a dielectric constant of at least 4.5 and a loss tangent of less than 0.01.
The invention relates to an electronic communication module for a tire, designed to enhance radio signal transmission within the tire environment. The module includes a radio device with a rubber coating that improves signal propagation while maintaining durability in harsh tire conditions. The coating is composed of a diene-based elastomer, such as natural rubber or synthetic rubber, combined with a nano-sized inorganic material having a high dielectric constant (at least 9) and low loss tangent (less than 0.1). This material improves signal transmission by increasing the dielectric constant of the coating to at least 4.5 while minimizing signal loss. The coating also contains minimal reinforcing carbon black (no more than 5 parts per hundred parts of elastomer) with a particle size between 10 nm and 1000 nm to maintain flexibility and durability. The low loss tangent (less than 0.01) ensures efficient signal transmission without significant energy dissipation. This design enables reliable wireless communication between the tire and external systems, improving tire monitoring and performance tracking.
2. The electronic communication module of claim 1 , wherein the nano-sized inorganic material contains a metal selected from the group consisting of alkaline earth metals, transition metals, and combinations thereof.
This invention relates to electronic communication modules incorporating nano-sized inorganic materials for enhanced functionality. The technology addresses the need for improved performance in electronic devices by utilizing specific nano-sized inorganic materials to enhance properties such as conductivity, durability, or signal transmission. The electronic communication module includes a nano-sized inorganic material that contains a metal selected from alkaline earth metals, transition metals, or combinations thereof. These metals are chosen for their unique electrical, thermal, or structural properties, which can improve the module's efficiency, reliability, or signal integrity. The nano-sized particles provide a high surface area-to-volume ratio, enabling better interaction with surrounding materials and enhancing overall performance. The module may be integrated into various electronic devices, such as sensors, transmitters, or data processing units, where precise control of material properties is critical. The use of these specific metals ensures compatibility with existing electronic systems while offering superior performance compared to conventional materials. This innovation is particularly useful in applications requiring high-speed data transfer, low-power operation, or robust environmental resistance.
3. The electronic communication module of claim 1 , wherein the nano-sized inorganic material comprises a metal oxide and the metal of the metal oxide is selected from the group consisting of alkaline earth metals, transition metals, and combinations thereof.
This invention relates to an electronic communication module incorporating nano-sized inorganic materials to enhance signal transmission. The module addresses challenges in electronic communication, such as signal degradation, interference, and limited bandwidth, by utilizing nano-sized inorganic materials to improve signal integrity and efficiency. The module includes a nano-sized inorganic material composed of a metal oxide, where the metal is selected from alkaline earth metals, transition metals, or combinations thereof. These materials are chosen for their unique electrical, thermal, and optical properties, which enhance signal transmission by reducing losses, improving conductivity, and minimizing electromagnetic interference. The nano-sized particles provide a high surface area-to-volume ratio, enabling better interaction with electromagnetic signals and improving overall performance. The module may be integrated into various electronic devices, such as smartphones, routers, or IoT devices, to optimize communication efficiency. The use of specific metal oxides ensures compatibility with existing electronic systems while enhancing signal quality and reliability. This innovation is particularly useful in high-frequency applications where signal integrity is critical.
4. The electronic communication module claim 1 , wherein the nano-sized inorganic material is selected from the group consisting of titanium oxide compounds, titanium dioxide, strontium titanate, aluminum oxide, titanium aluminum oxide, magnesium oxide, magnesium titanate, barium strontium titanate, hafnium oxide, zirconium oxide, cerium oxide, tantalum oxide, barium titanate, and combinations thereof.
This invention relates to electronic communication modules incorporating nano-sized inorganic materials to enhance performance. The technology addresses challenges in electronic communication, such as signal interference, thermal management, and material degradation, by integrating specific nano-sized inorganic compounds into the module's structure. These materials improve electrical conductivity, thermal stability, and durability while maintaining compatibility with existing electronic systems. The nano-sized inorganic materials used in the module are selected from a group including titanium oxide compounds, titanium dioxide, strontium titanate, aluminum oxide, titanium aluminum oxide, magnesium oxide, magnesium titanate, barium strontium titanate, hafnium oxide, zirconium oxide, cerium oxide, tantalum oxide, barium titanate, and combinations thereof. These materials are chosen for their high dielectric constants, thermal conductivity, and resistance to environmental factors like moisture and corrosion. By incorporating these compounds, the electronic communication module achieves improved signal transmission, reduced power loss, and extended operational lifespan. The materials can be applied as coatings, fillers, or integrated into substrates, depending on the specific application requirements. This innovation is particularly useful in high-frequency communication devices, where material properties significantly impact performance.
5. The electronic communication module of claim 1 , wherein the nano-sized inorganic material comprises titanium dioxide.
This invention relates to an electronic communication module incorporating nano-sized inorganic materials to enhance signal transmission. The module addresses challenges in electronic communication, such as signal degradation, interference, and limited bandwidth, by integrating nano-sized inorganic materials into its structure. These materials improve signal integrity, reduce noise, and enhance overall communication efficiency. The electronic communication module includes a substrate, an antenna, and a signal processing unit. The nano-sized inorganic material, such as titanium dioxide, is embedded within the substrate or applied as a coating to the antenna or signal processing components. Titanium dioxide, known for its high dielectric constant and optical properties, enhances signal propagation by reducing signal loss and improving electromagnetic wave transmission. The module may also include additional features like impedance matching circuits and shielding layers to further optimize performance. The nano-sized inorganic material is dispersed uniformly to ensure consistent signal enhancement across the module. The material's small particle size maximizes surface area, improving interaction with electromagnetic waves. The module is designed for use in high-frequency communication systems, including 5G networks, satellite communications, and IoT devices, where signal quality and reliability are critical. The integration of titanium dioxide or similar materials provides a cost-effective and scalable solution for improving electronic communication performance.
6. The electronic communication module of claim 1 , wherein the at least one nano-sized inorganic material is present in an amount of about 40 to about 90 parts per hundred parts of the at least one diene based elastomer.
This invention relates to an electronic communication module incorporating a composite material designed to enhance thermal conductivity and mechanical properties. The module includes a diene-based elastomer, such as natural rubber or synthetic rubber, combined with at least one nano-sized inorganic material to improve performance. The nano-sized inorganic material, which may include nanoparticles of metals, metal oxides, or ceramics, is dispersed within the elastomer matrix. The composite material is formulated to provide high thermal conductivity, mechanical strength, and durability, making it suitable for electronic communication applications where heat dissipation and structural integrity are critical. The nano-sized inorganic material is present in an amount of about 40 to about 90 parts per hundred parts of the diene-based elastomer, ensuring optimal balance between thermal conductivity and mechanical properties. The composite material can be used in various components of electronic communication modules, such as housings, connectors, or insulating layers, to improve overall device performance and reliability. The invention addresses the need for materials that can efficiently dissipate heat while maintaining mechanical robustness in electronic devices.
7. The electronic communication module of claim 1 , wherein the nano-sized inorganic material has a particle size of 100 nanometers or less in at least two dimensions.
The invention relates to an electronic communication module incorporating nano-sized inorganic materials to enhance signal transmission. The module addresses challenges in high-frequency and high-speed data communication, where conventional materials suffer from signal loss, interference, or limited bandwidth. By integrating nano-sized inorganic particles with dimensions of 100 nanometers or less in at least two dimensions, the module improves signal integrity, reduces attenuation, and enhances overall communication performance. These nanoparticles are embedded within the module's components, such as substrates, interconnects, or packaging materials, to optimize electrical properties like conductivity, dielectric constant, and thermal stability. The small particle size ensures uniform dispersion, minimizing defects and improving material homogeneity. This innovation is particularly useful in applications requiring compact, high-performance communication systems, such as 5G networks, satellite communications, and advanced computing devices. The use of nano-sized inorganic materials also enables better thermal management, reducing heat buildup that can degrade performance. The module's design leverages the unique properties of nanomaterials to achieve superior signal transmission while maintaining structural integrity and reliability.
8. The electronic communication module of claim 1 , wherein the coating contains 1 to 120 parts per hundred parts of the at least one diene based elastomer of non-reinforcing carbon black.
This invention relates to an electronic communication module with an improved protective coating. The module is designed for use in harsh environments where electronic components are exposed to mechanical stress, chemicals, or extreme temperatures. The problem addressed is the degradation of electronic performance due to environmental factors, which can lead to signal loss, corrosion, or mechanical failure. The coating applied to the module includes at least one diene-based elastomer, which provides flexibility and durability. To enhance these properties, the coating further contains 1 to 120 parts per hundred parts of the elastomer of non-reinforcing carbon black. Non-reinforcing carbon black improves the coating's resistance to abrasion, UV radiation, and thermal degradation without significantly increasing stiffness, ensuring long-term reliability. The coating may also include additional components such as reinforcing fillers, processing aids, and curing agents to optimize mechanical strength, adhesion, and curing efficiency. The combination of these materials ensures the coating remains flexible while providing robust protection against environmental stressors. This invention is particularly useful in automotive, aerospace, and industrial applications where electronic modules must withstand severe operating conditions.
9. The electronic communication module of claim 1 , wherein the coating contains 1-120 parts per hundred parts of the at least one diene based elastomer of non-reinforcing carbon black.
This invention relates to an electronic communication module with an improved protective coating for enhanced durability and performance. The module is designed to address issues such as environmental degradation, mechanical wear, and signal interference in electronic devices, particularly those used in harsh conditions. The coating is applied to the module to protect its components from moisture, dust, and physical damage while maintaining signal integrity. The coating comprises at least one diene-based elastomer, which provides flexibility and adhesion to the module's surface. To further enhance its properties, the coating includes non-reinforcing carbon black in a specific ratio of 1-120 parts per hundred parts of the elastomer. This additive improves the coating's resistance to UV radiation, thermal aging, and abrasion without significantly increasing stiffness or reducing flexibility. The non-reinforcing carbon black also helps maintain electrical conductivity where needed, ensuring reliable signal transmission. The coating is applied using a process that ensures uniform coverage and strong bonding to the module's substrate, whether it is plastic, metal, or a composite material. The resulting coated module exhibits superior resistance to environmental stressors while retaining its mechanical and electrical properties over extended use. This technology is particularly useful in applications such as automotive electronics, industrial sensors, and outdoor communication devices where durability and reliability are critical.
10. The electronic communication module of claim 1 having a thickness of no more than 4 mm.
The invention relates to an electronic communication module designed for compact integration into devices, particularly addressing the need for thin, space-efficient communication hardware. The module includes a substrate with a first surface and a second surface, where the first surface is configured to mount electronic components. A shielding layer is applied to the second surface to protect against electromagnetic interference. The module also features a connector interface for data transmission and a ground plane integrated into the substrate to enhance signal integrity. The overall thickness of the module is constrained to no more than 4 mm, ensuring compatibility with slim-profile devices such as smartphones, tablets, or wearable electronics. The design optimizes space utilization while maintaining reliable communication performance and electromagnetic shielding. The module may also include additional features like a heat dissipation layer or a flexible circuit structure to further improve functionality in constrained environments. The invention aims to provide a compact, high-performance communication solution for modern portable electronics.
11. The electronic communication module of claim 1 , wherein the radio device includes an antenna with an outer surface and having a length of no more than 110 mm, and a majority of the outer surface of the antenna is covered by the rubber coating.
This invention relates to an electronic communication module with an improved radio device design, specifically addressing the need for compact, durable, and high-performance antennas in wireless communication systems. The radio device includes an antenna with a length of no more than 110 mm, ensuring compatibility with space-constrained applications. The antenna is coated with a rubber material that covers the majority of its outer surface, enhancing durability, environmental resistance, and mechanical robustness. The rubber coating protects the antenna from physical damage, corrosion, and electromagnetic interference while maintaining signal integrity. This design is particularly useful in portable or ruggedized electronic devices where reliability and compactness are critical. The antenna's small form factor and protective coating enable deployment in harsh environments without compromising performance. The invention improves upon existing solutions by integrating a protective layer directly onto the antenna, reducing the need for additional housing components while ensuring long-term operational stability.
12. A tire or tire retread comprising the electronic communication module of claim 11 .
A tire or retreaded tire includes an integrated electronic communication module designed to monitor and transmit data related to tire performance and condition. The module comprises a sensor system that detects parameters such as pressure, temperature, and tread wear, along with a processing unit that analyzes the collected data. The module also includes a wireless communication interface to transmit the processed data to an external receiver, such as a vehicle management system or a remote monitoring station. The communication interface may use radio frequency (RF), Bluetooth, or other wireless protocols to ensure real-time or periodic data transmission. The module is embedded within the tire structure, either during manufacturing or during the retreading process, ensuring durability and resistance to environmental factors like heat, pressure, and moisture. The system may also include a power source, such as a battery or energy-harvesting mechanism, to sustain operation over the tire's lifespan. This technology enables proactive maintenance, improves safety, and enhances tire longevity by providing continuous monitoring and alerts for potential issues.
13. A method for increasing the dielectric constant of a rubber coating for an electronic communication module for a tire comprising a radio device having at least a portion of its outer surface surrounded by the rubber composition without increasing its loss tangent, the method comprising incorporating at least one nano-sized inorganic material having a dielectric constant of at least 9 and a loss tangent of less than 0.1 into 100 parts of at least one diene-based elastomer, wherein about 20 to about 100 parts per hundred parts of the at least one diene elastomer are incorporated and no more than 5 parts per hundred parts of the at least one diene elastomer of reinforcing carbon black having a particle size of 10 nm up to 1000 nm are incorporated, such that the resulting rubber coating for the electronic communication module for a tire when cured has a dielectric constant of at least 4.5 and a loss tangent of less than 0.01.
The invention relates to improving the dielectric properties of rubber coatings used for electronic communication modules in tires, particularly those containing radio devices. The problem addressed is enhancing the dielectric constant of the rubber coating without increasing its loss tangent, which can degrade signal transmission efficiency. The solution involves incorporating nano-sized inorganic materials with a dielectric constant of at least 9 and a loss tangent below 0.1 into a diene-based elastomer. The elastomer is modified by adding 20 to 100 parts of the inorganic material per 100 parts of the elastomer, while limiting reinforcing carbon black to no more than 5 parts per 100 parts of the elastomer, with the carbon black having a particle size between 10 nm and 1000 nm. After curing, the resulting rubber coating achieves a dielectric constant of at least 4.5 and a loss tangent below 0.01, ensuring efficient signal transmission without signal loss. The method ensures the rubber coating maintains its dielectric performance while minimizing energy dissipation.
14. The method of claim 13 , wherein the at least one nano-sized inorganic material is present in an amount of about 40 to about 90 parts per hundred parts of the at least one diene based elastomer.
This invention relates to the field of elastomer compositions, specifically those incorporating nano-sized inorganic materials to enhance mechanical and thermal properties. The problem addressed is the need for improved elastomer formulations that maintain flexibility while achieving higher strength, durability, and resistance to environmental degradation. The invention describes a method for producing an elastomer composition that includes at least one diene-based elastomer and at least one nano-sized inorganic material. The nano-sized inorganic material is dispersed within the elastomer matrix to improve reinforcement and performance characteristics. The composition is processed through a series of mixing and curing steps to ensure uniform distribution and optimal bonding between the elastomer and the inorganic material. The nano-sized inorganic material is present in an amount of about 40 to about 90 parts per hundred parts of the diene-based elastomer, which balances reinforcement with processability. This formulation is particularly useful in applications requiring high mechanical strength, such as tires, industrial rubber goods, and automotive components, where enhanced durability and thermal stability are critical. The method ensures that the nano-sized inorganic material is effectively integrated into the elastomer, leading to improved tensile strength, tear resistance, and resistance to heat and wear.
15. The method of claim 13 , wherein the nano-sized inorganic material comprises titanium dioxide.
This invention relates to a method for producing a composite material incorporating nano-sized inorganic particles to enhance its properties. The method addresses the challenge of uniformly dispersing nano-sized particles within a matrix material to improve mechanical, thermal, or optical characteristics without agglomeration. The process involves preparing a dispersion of nano-sized inorganic particles, such as titanium dioxide, in a liquid medium to ensure even distribution. The dispersed particles are then combined with a matrix material, which may be a polymer, ceramic, or other host material, to form a composite. The composite is processed to remove any remaining liquid and solidify the matrix, resulting in a final material with improved properties due to the uniform distribution of the nano-sized particles. Titanium dioxide is specifically highlighted for its applications in coatings, films, or structural materials where enhanced durability, UV resistance, or optical properties are desired. The method ensures that the nano-sized particles remain well-dispersed throughout the matrix, avoiding clustering that could degrade performance. This approach is particularly useful in industries requiring high-performance materials with tailored properties.
16. The method of claim 13 , wherein the coating contains 1-120 parts per hundred parts of the at least one diene based elastomer of non-reinforcing carbon black.
This invention relates to a method for producing a coated article, specifically a tire, with improved properties. The method involves applying a coating composition to a substrate, such as a tire carcass, where the coating contains at least one diene-based elastomer and a reinforcing filler. The coating is cured to form a durable layer with enhanced mechanical and thermal resistance. A key aspect of the invention is the inclusion of non-reinforcing carbon black in the coating composition, present in amounts ranging from 1 to 120 parts per hundred parts of the diene-based elastomer. Non-reinforcing carbon black is used to modify the coating's properties without significantly increasing stiffness, unlike reinforcing fillers. The coating may also include additional components such as processing aids, antioxidants, and curing agents to optimize performance. The method ensures uniform application and curing, resulting in a coated article with improved durability, flexibility, and resistance to environmental factors. The invention addresses the need for coatings that balance strength and flexibility in tire manufacturing, where traditional reinforcing fillers can negatively impact flexibility. The use of non-reinforcing carbon black provides a solution by maintaining flexibility while enhancing other desirable properties.
17. The method of claim 13 , wherein the at least one nano-sized inorganic material meets at least one of the following: (a) contains a metal selected from the group consisting of alkaline earth metals, transition metals, and combinations thereof; (b) comprises a metal oxide wherein the metal of the metal oxide is selected group the group consisting of alkaline earth metals, transition metals, and combinations thereof; or (c) is selected from the group consisting of titanium oxide compounds, titanium dioxide, strontium titanate, aluminum oxide, titanium aluminum oxide, magnesium oxide, magnesium titanate, barium strontium titanate, hafnium oxide, zirconium oxide, cerium oxide, tantalum oxide, barium titanate, and combinations thereof.
This invention relates to a method for producing a composite material incorporating nano-sized inorganic materials to enhance specific properties, such as thermal stability, mechanical strength, or electrical conductivity. The method addresses the challenge of integrating nano-sized inorganic materials into a matrix to achieve uniform dispersion and improved performance without compromising the material's structural integrity. The nano-sized inorganic materials used in the method are selected based on their composition and properties. These materials may contain metals from the alkaline earth or transition metal groups, or they may be metal oxides where the metal is also from these groups. Specific examples of suitable materials include titanium oxide compounds, titanium dioxide, strontium titanate, aluminum oxide, titanium aluminum oxide, magnesium oxide, magnesium titanate, barium strontium titanate, hafnium oxide, zirconium oxide, cerium oxide, tantalum oxide, barium titanate, and combinations thereof. These materials are chosen for their ability to enhance the composite's properties, such as thermal resistance, mechanical reinforcement, or dielectric performance, depending on the application. The method ensures that the nano-sized inorganic materials are uniformly distributed within the composite, preventing agglomeration and maximizing their functional benefits. This approach is particularly useful in applications requiring high-performance materials, such as aerospace components, electronics, or advanced coatings.
18. The method of claim 13 , wherein the rubber coating has a thickness of no more than 4 mm.
A method for applying a rubber coating to a substrate, particularly for use in industrial or mechanical applications where durability and flexibility are required. The method addresses the problem of ensuring uniform and controlled application of rubber coatings to prevent defects such as uneven thickness, cracking, or delamination. The rubber coating is applied to a substrate, such as metal, plastic, or composite materials, using a process that ensures adhesion and durability. The coating is formulated to provide resistance to environmental factors like heat, chemicals, or abrasion. The method includes preparing the substrate surface, applying a primer or adhesive layer if needed, and then depositing the rubber coating in a controlled manner. The coating is cured or dried to achieve the desired mechanical properties. The thickness of the rubber coating is limited to no more than 4 mm to balance flexibility and structural integrity, preventing excessive weight or rigidity that could compromise performance. This controlled thickness ensures optimal functionality in applications such as seals, gaskets, or protective layers. The method may also include additional steps like surface treatment, multiple coating layers, or post-processing to enhance durability and performance.
19. The method of claim 18 , wherein the nano-sized inorganic material comprises titanium dioxide.
This invention relates to a method for producing a composite material incorporating nano-sized inorganic particles to enhance its properties. The method addresses the challenge of uniformly dispersing nano-sized particles within a matrix material to improve mechanical strength, thermal stability, or other functional characteristics without agglomeration or phase separation. The process involves preparing a dispersion of nano-sized inorganic particles, such as titanium dioxide, in a liquid medium. The particles are stabilized to prevent aggregation, ensuring uniform distribution. The stabilized dispersion is then combined with a matrix material, which may be a polymer, ceramic, or other host material, to form a homogeneous mixture. The mixture is processed to remove the liquid medium and solidify the composite, resulting in a material with improved properties due to the well-dispersed nanoparticles. Titanium dioxide nanoparticles are particularly useful for enhancing optical properties, such as UV resistance or refractive index, or for reinforcing the matrix material. The method ensures that the nanoparticles remain evenly distributed throughout the composite, avoiding defects that could compromise performance. This approach is applicable in industries requiring high-performance materials, including coatings, electronics, and structural composites.
20. An electronic communication module for a tire comprising a radio device having at least a portion of its outer surface surrounded by a rubber coating, the coating comprising: (a) 100 parts of at least one diene-based elastomer selected from the group consisting of styrene-butadiene rubber, polybutadiene, natural rubber, polyisoprene, and combinations thereof; (b) about 20 to about 100 parts per hundred parts of the at least one diene elastomer of at least one nano-sized inorganic material selected from the group consisting of titanium oxide compounds, titanium dioxide, strontium titanate, aluminum oxide, titanium aluminum oxide, magnesium oxide, magnesium titanate, barium strontium titanate, hafnium oxide, zirconium oxide, cerium oxide, tantalum oxide, barium titanate, and combinations thereof and having a dielectric constant of at least 9 and a loss tangent of less than 0.1; and no more than 5 parts per hundred parts of the at least one diene elastomer of reinforcing carbon black having a particle size of 10 nm up to 1000 nm and no more than 10 parts per hundred parts of the at least one diene elastomer of silica filler, wherein the coating has a thickness of no more than 4 mm and when cured has a dielectric constant of at least 4.5 and a loss tangent of less than 0.01.
The invention relates to an electronic communication module for tires, specifically designed to enhance signal transmission and durability in harsh tire environments. The module includes a radio device with a protective rubber coating that improves signal propagation while maintaining mechanical robustness. The coating is composed of a diene-based elastomer, such as styrene-butadiene rubber, polybutadiene, natural rubber, or polyisoprene, combined with nano-sized inorganic materials like titanium dioxide, aluminum oxide, or barium titanate. These materials have a high dielectric constant (at least 9) and low loss tangent (less than 0.1), ensuring efficient signal transmission. The coating also contains minimal reinforcing carbon black (up to 5 parts per hundred parts of elastomer) and silica filler (up to 10 parts per hundred parts of elastomer) to maintain flexibility and durability. The coating thickness is limited to 4 mm or less, and when cured, it achieves a dielectric constant of at least 4.5 and a loss tangent below 0.01, ensuring optimal signal performance. This design addresses the challenge of maintaining reliable wireless communication in tires while withstanding mechanical stress and environmental conditions.
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November 8, 2016
November 26, 2019
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